Five cops and a civilian are in police custody over allegations of extortion and kidnapping.
The officers who were arrested on Friday night, are said to have kidnapped a Chinese national and demanded Sh1 million before releasing him.
According to Thika police, the five arrested the Chinese national at Makongeni area on claims that he did not have a valid work permit.
The family of the Chinese man reported the matter to Thika Police Station before a team of officers was dispatched to Nairobi to arrest the gang.
The five were arrested at Muthaiga after being trailed from Thika.